HOUSTON -- Shell launched new Nitrogen Enriched Gasolines, a new fuel that delivers 20 percent more active cleaning agents for increased engine protection. The new gasoline offering is designed to protect a vehicle engine's intake valves and fuel injectors from carbon deposit buildup, or "gunk," according to the company.

"Whether it's a new car with an advanced engine technology or an older one that is needed for continued use over the long haul, today's drivers need protection from engine gunk," said Dan Little, North America fuels marketing manager for Shell Oil Products US. "Knowing this, Shell set out with our research teams and with input from leading automakers and other stakeholders to design a formulation to meet the needs of today's consumer and protect critical engine parts, no matter what they drive."

New vehicle production with advanced engine technologies is increasing, as is the length of time Americans are keeping their current cars, according to the announcement. The number of vehicles with direct injection engines is expected to triple over the next four years, while the average length of car ownership has increased by more than 50 percent over the past decade. With this in mind, Shell's new Nitrogen Enriched Cleaning System helps maintain thermal stability and work under extremely hot engine temperatures, the company said.

For vehicles whose manufacturers recommend or require a premium fuel, Shell recommends its V-Power Premium Gasoline, which has the highest concentration of its Nitrogen Enriched Cleaning System.

In addition to better protecting their vehicles with Shell's new gasoline, customers can also earn discounts at Shell gas stations by using loyalty cards at participating grocery stores. Shell has alliances with leading grocers in more than 130 markets coast to coast. All consumers need to do is make qualifying purchases at participating grocery stores by using their existing loyalty rewards card and they earn rewards that can be redeemed at participating Shell stations. More information is available at shell.us/ontheroad.